2521741 has 4 divisors (see below), whose sum is σ = 2525472. Its totient is φ = 2518012.

The previous prime is 2521733. The next prime is 2521747. The reversal of 2521741 is 1471252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2521741 - 2³ = 2521733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (631368).

2^2521741 is an apocalyptic number.

It is an amenable number.

2521741 is a deficient number, since it is larger than the sum of its proper divisors (3731).

2521741 is an equidigital number, since it uses as much as digits as its factorization.

2521741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730.

The product of its digits is 560, while the sum is 22.

The square root of 2521741 is about 1587.9990554153. Note that the first 3 decimals coincide. The cubic root of 2521741 is about 136.1131735291.

Adding to 2521741 its reverse (1471252), we get a palindrome (3992993).

The spelling of 2521741 in words is "two million, five hundred twenty-one thousand, seven hundred forty-one".